Pressure-resistant and oil-leakage-proof brushless direct current motor

The utility model discloses a pressure-resistant and oil-leakage-proof brushless direct current motor. Motor comprising a motor body, the motor body comprises a front shell, a rear shell and an oil separation sleeve, wherein the front shell and the rear shell are connected with each other, and the two ends of the oil separation sleeve abut against the front shell and the rear shell respectively. Arotor and a stator are arranged in the front shell and the rear shell; the oil separation sleeve is arranged between the stator and the rotor in a penetrating manner; the oil separation sleeve, the front shell and the rear shell jointly form an accommodating cavity; a glue pouring hole is formed in the rear shell; the containing cavity is filled with pouring sealant. A bearing installation hole used for installing a first bearing is formed in the inner side wall of the end of the front shell, a reducing section is arranged at the rear end of the oil separation sleeve, a second bearing abutting against the front porti